Graduate Thesis Or Dissertation
 

Radiation Detection Using a Semiconducting Nanocrystal Detector

Public Deposited

Downloadable Content

Download PDF
https://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/5138jj28d

Descriptions

Attribute NameValues
Creator
Abstract
  • Nanostructured material has been projected to be the next generation material for the detection of ionizing radiation due to the uniquely superior physical processes associated with charge creation and by virtue of their optoelectronic tunablility. Semiconducting Nanocrystal (NC) detectors, by nature of their low band gap material, low fabrication costs, high densities, and direct radiation-to-charge formation (unlike scintillators) are poised to capture the best resolution of all NC radiation detectors. If adequately developed, semiconducting NC detectors could have a substantial impact in all areas where radiation spectroscopy is needed. Proof of concept detectors were shown to achieve resolution comparable to that of High Purity Germanium (HPGe) while operating at room temperature. However, all deposition processes performed (drop casting, spin casting, dip casting) even with various treatments (layer-by-layer treatment, ligand exchange, addition of a conductive polymer) have resulted in a material with structural defects and inhomogeneities which in turn create poor conditions for the mitigation of charge carriers, and ultimately thicknesses for the active detection medium have not surpassed the millimeter scale. In this thesis, a variety of Lead Selenide (PbSe) NC based radiation detectors were fabricated using a chemical synthesis and drop-cast deposition method, however, none were able to show sensitivity to radiation due to a low signal to noise ratio.
License
Resource Type
Date Available
Date Issued
Degree Level
Degree Name
Degree Field
Degree Grantor
Commencement Year
Advisor
Committee Member
Academic Affiliation
Non-Academic Affiliation
Subject
Rights Statement
Publisher
Peer Reviewed
Language
Replaces

Relationships

Parents:

This work has no parents.

In Collection:

Items

Thumbnail Title Date Uploaded Visibility Actions
file details RinaldiDavidW2016.pdf 2017-08-16 Public Download